Convert millimeters to inches and ISO to UNC threads
Convert solar tracker and screw sizes from mm to inch and from ISO to UNC
All the dimensions present in the drawings of our solar tracker are expressed in millimetres, even the screws follow the ISO standard, for those who use measurements in inches and screws in the UNC (American) standard we provide this page with an online tool in which you can easily convert all the measurements you are interested in and for screws a comparative table of the ISO-UNC standard.
mm to inch Converter
The thread sizes shown below are not directly interchangeable with each other. This table is only to help find a nearest equivalent sized fastener. In the solar tracker design all screws are Metric coarse
| Metric coarse | Metric fine | BSF/BSW | UNC | UNF |
|---|---|---|---|---|
| M2 x 0.4 | / | / | 1-64 | 1-72 |
| M2.5 x 0.45 | / | / | 3-48 | 3-56 |
| M3 x 0.5 | / | / | 4-40 | 4-48 |
| M3.5 x 0.6 | / | / | 6-32 | 6-40 |
| M4 x 0.7 | / | / | 8-32 | 8-36 |
| M5 x 0.8 | / | / | 10-24 | 10-32 |
| M6 x 1 | M6 x 0.75 | 1/4" | 1/4-20 | 1/4-28 |
| M8 x 1.25 | M8 x 1 | 5/16" | 5/16-18 | 5/16-24 |
| M10 x 1.5 | M10 x 1.25 | 3/8" | 3/8-16 | 3/8-24 |
| M12 x 1.75 | M12 x 1.25 | 1/2" | 1/2-13 | 1/2-20 |
| M14 x 2 | M14 x 1.5 | 9/16" | 9/16-12 | 9/16-18 |
| M16 x 2 | M16 x 1.5 | 5/8" | 5/8-11 | 5/8-18 |
| M20 x 2.5 | M20 x 1.5 | 3/4" | 3/4-10 | 3/4-16 |
| M24 x 3 | M24 x 2 | 1" | 1-8 | 1-12 |
| M30 x 3.5 | M30 x 2 | 1-1/8" | 1 1/4-7 | 1 1/8-12 |
| M36 x 4 | M36 x 3 | 1-3/8" | 1 1/2-6 | 1 1/4-12 |
